International Time Capsule Society
The International Time Capsule Society (ITCS), based at Oglethorpe University in Atlanta, Georgia, is an organization established to promote the study of time capsules. Since 1990, it has been documenting all types of time capsule projects worldwide. In October 2016 its website reported that it is no longer active but continues to register time capsules.
The founders are time capsule researchers from the United States and Europe.
- Knute Berger ("Skip"), executive director of the Washington Centennial Time Capsule project, author of the article Time Capsules in America
- Dr. Brian Durrans, anthropologist, former deputy keeper in the ethnography department of the British Museum.
- Paul Hudson, author of the article The Oglethorpe Atlanta Crypt of Civilization Time Capsule 
- William Jarvis, of Washington State University Library, author of the book Time capsules: a cultural history (2002).
The International Time Capsule Society states in their handout brochure as their mission:
- To maintain a registry of timed events of all known time capsules.
- To establish a clearing house for information about time capsules.
- To encourage study of the history, variety, and motivation behind time capsule projects.
- To educate the general public and the academic community concerning the value of time capsules.
The International Time Capsule Society is an organization dedicated to tracking the world's time capsules to ensure that those that are created are not lost. The ITCS has set up a registry of time capsules, and has 1,400 groups listed. The ITCS estimates there are between 10,000 and 15,000 time capsules worldwide. Paul Hudson of Oglethorpe University estimates that more than 80 percent of all time capsules are lost and will not be opened on their intended date.
Crypt of Civilization
Lost time capsules
The International Time Capsule Society is also in search of several time capsules that supposedly at one time existed, however are presently lost. It requests that the whereabouts of any of the lost capsules be reported to them. New methods using GPS coordinates are underway to prevent time capsules from getting lost in time.
- "Oglethorpe University - International Time Capsule Society". Retrieved 2008-07-01.
- "Oglethorpe University - Inventory of the Crypt of Civilization". Retrieved 2008-07-01.
- "The British Library - How do I make a time capsule". Archived from the original on 2008-06-07. Retrieved 2008-07-01.
- "Membership Organizations - International Time Capsule Society (ITCS )". Retrieved 2008-07-01.
- "AffordableTimeCapsule web site". Retrieved 2008-07-01.
- Time Capsules: A Cultural History By William E. Jarvis, p. 137. Retrieved 2008-07-01.
- ""The New York Times" article June 4, 1990: Insuring That Capsules Aren't Lost to Time". 1990-06-04. Retrieved 2008-07-04.
- "Time Capsule: Remains of the Day". Retrieved 2008-07-04.
- "article April 30, 2005: The Crypt of Civilization - Museum in a time capsule". Retrieved 2008-07-04.
- "Time In a Bottle; As the Millennium Approaches, Gadgets Are Piled Into Capsules As a Present for the Future". The New York Times. 1999-04-22. Retrieved 2008-07-01.
- "Oglethorpe University - Experts List the Most-Wanted Time Capsules". Retrieved 2008-07-01.